Lively pulled her hair back into a tight ponytail to properly show off her one-shoulder cornflower blue Atelier Versace chiffon gown, which featured a long train, high leg slit and Swarovski crystals. She paired the stunning frock with diamond jewels and strappy Christian Louboutin heels.

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The Gossip Girl alum did rock a skintight navy-and-teal cut-out cocktail dress from Versace on Friday, yet somehow, her baby bump didn't stand out quite as much in that ensemble. Perhaps it was the dark hues?

Blake Lively finally shows off her baby belly at Cannes -- See her latest stunning dress!

Sheer perfection! Kirsten Dunst dazzled at the closing ceremony of Cannes in a sheer, nude dress with delicate lace detailing. The fitted, strapless top and sheer, tulle bottom looked elegant on the stunning star. (Photo by Antonio de Moraes Barros Filho/FilmMagic)

Model Alessandra Ambrosio definitely turned heads in this sparkling, spider-like dress and pant combination. At first glance, the look appeared to be just a gorgeous ballgown, but as the Victoria's Secret model held out her gown, she revealed a very unique look underneath. What do you think of the style? (Photo by Gisela Schober/Getty Images)

Rossalind Ross and Mel Gibson looked lovely in matching atture at Cannes. Gibson seemed more than happy to escort his girlfriend to the film festival. (Photo by Luca Teuchmann/WireImage)

Wowza! Bella Hadid left little to the imagination in this red, silk, halter dress with a thigh-high slit that definitely showed off more than she bargained for. (Photo by Anthony Harvey/FilmMagic)

Put your back into it! Model Irina Shayk looked lovely in a black and white feathered frock with a stunning back that featured a web-like set of diamonds.

. (Photo by Dominique Charriau/WireImage)

She's a dame! Helen Mirren literally twirled down the red carpet in a midnight blue and black dress with sparkling, lace sleeves.

(Photo by Pascal Le Segretain/Getty Images)

Rosie Huntington-Whiteley was red hot in a frothy and fabulous dress that showed off her model physique. We love the matching red lipstick she finished things off with.

(Photo by Venturelli/WireImage)

Model Rose Bertram looked pretty as can be in a tulle and lace floral gown. (Photo by Gisela Schober/Getty Images)

Vanessa Paradis looked lovely in a nude dress with sheer paneling.

(Photo by Venturelli/WireImage)

Alessandra Ambrosio took the plunge in a sparkling, white dress with a set of geometric designs holding the front together.

. (Photo by Anthony Harvey/FilmMagic)

Kim Kardashian was a head-turner in a silver, chainmail-like gown with sexy sheer panels on the side that highlighted her curvy figure. What do you think of the diamond-laden look?

(Photo by George Pimentel/WireImage)

Mischa Barton sizzled in a simple gold dress with a Grecian theme. (Photo by Venturelli/WireImage)

Model Karlie Kloss looked pretty as can be in i metallic number with a thigh-high slit.

Model Toni Garrn and her partner Chandler Parsons turned heads with their respective attire. Garrn's thigh-high slit was stunning and sexy. (Photo by George Pimentel/WireImage)

That's definitely a scene-stealer, but we're not sure it's the right look. Bella Hadid rocked a fringe top with a very revealing neckline and polished it off with a funky, sparkling pinstripe suit. (Photo by George Pimentel/WireImage)

Salma Hayek put her famous physique on full display in a blush-colored, corset style dress. The look starts out okay, ut the addition of ruffles, a sparkling belt and a flower don't have us swooning. (Photo by Mike Marsland/Mike Marsland/WireImage)

Kate Hudson dazzled in a bright-colored frock with a sexy, plunging neckline. (Photo by George Pimentel/Getty Images)

Kirsten Dunst was polished and pretty in a fitted, white gown with delicate straps. We love her old Hollywood curls and red lips. (Photo by Andreas Rentz/Getty Images)

Model Kate Moss put her best foot forward in a persimmon-colored one shoulder dress this a seriously sexy slit. (Photo by Pascal Le Segretain/Getty Images)

Heidi Klum looked slick and sophisticated in a black diamond patterned skirt and tight-fitting top at the Vanity Fair and Chopard after-party.

Dazzler! Mischa Barton looked every inch the starlet at the premiere of "Loving" in a black gown with a sheer top and delicate detailing. (Photo by Venturelli/WireImage)

Julia Dietze went for high drama with a sparkling, white dress and a bold red lip. (Photo by Pascal Le Segretain/Getty Images)

Adam Driver and Joanne Tucker looked lovely at the "Paterson" premiere. Driver looked slick in a classic suit while Tucker was ravishing in a red jumpsuit.

(Photo by Venturelli/WireImage)

Blake Lively looked like a real-life Cinderella at the premiere of "Slack Bay." Lively dazzled in a powder blue ballgown with a fitted bodice and a ruffle skirt. She wore her hair back in a princess-like bun.

Photo by Venturelli/WireImage)

The back of Blake Lively's dress was just as stunning with a bow and a slight train. It was definitely a show-stopper. (Photo by Pascal Le Segretain/Getty Images)

She's the gold standard. Julianne Moore stopped by the Chopard Trophy Ceremony and was eye-catching in a gold, sequined gown with flutter sleeves and a fitted skirt. The dress featured a plunging, sheer neckline that accentuated her A-list body. (Photo by Gisela Schober/Getty Images for Chopard)

Colorful and gorgeous! Cheryl Fernandez-Versini had us ready to dance flamenco with this Spanish-style, strapless stunner with detailed embroidery throughout. We love that she took a risk on the outfit. (Photo by Samir Hussein/WireImage)

Juliette Binoche embraced simplicity and looked lovely in a blue fitted blouse and a long silk skirt. Her sleek, pulled back tresses polished off the modern look. (Photo by Anthony Harvey/FilmMagic)

Stunner! Actress Aishwarya Rai sparkled in a glittering, gold dress with a sheer cape. The dress is pretty as can be, but we're not so sure about the bright blue eye shadow. (Photo by Anthony Harvey/FilmMagic)

Peek-a-boo! Kristen Stewart gave fans a bit of a flash on Wednesday in a sheer blouse with only pockets to cover up her chest and a full skirt. (Photo by George Pimentel/WireImage)

They are the absolute king and queen of the red carpet. George Clooney and his wife, Amal Clooney, stunned at the "Money Monster" premiere with a tux for Clooney and a gorgeous, yellow gown for Amal. She polished off her look with bright red lips and subtle jewelry.

(Photo by Venturelli/WireImage)

We love that smile! Julia Roberts gave us serious "Pretty Woman" vibes in a black sweetheart ballgown with an oversized diamond and emerald necklace. All she needs is Richard Gere on her arm -- except she had Clooney instead. Which might be better.

(Photo by George Pimentel/WireImage)

Bella Hadid rocked the red carpet in a jaw-dropping cutout dress that showed off her incredible A-list figure. (Photo by Dominique Charriau/WireImage)

Jodie Foster didn't get fussy at Cannes and opted for a plain white dress and a set of strappy heels.

(Photo by Tony Barson/FilmMagic)

Kendall Jenner put her best foot forward in a tight-fitting jumpsuit that highlighted her lanky model body. She polished off the fabulous look with cat-eye sunglasses and subtle heels at Magnum Beach.

(Photo by Neil Mockford/Alex Huckle/GC Images)

Yellow alert! Jessica Chastain looked lovely in a bright canary yellow, strapless gown and a stunning diamond necklace. She wore her hair down and sleek to complete the look. (Photo by Antonio de Moraes Barros Filho/FilmMagic)

Blake Lively struck it hot at the photo call for "Cafe Society" in a bright red jumpsuit with a matching scarf. The look oozed old Hollywood glamour. (Photo by Mike Marsland/Mike Marsland/WireImage)

George Clooney looked dapper in an all-black ensemble at the "Money Monster" photo call. (Photo by George Pimentel/WireImage)

Feathered and fabulous! Blake Lively looked ultra-sleek in a black cocktail frock with feathered accents and a plunging neckline at the Opening Gala Dinner.

arrives at the Opening Gala Dinner during The 69th Annual Cannes Film Festival on May 11, 2016 in Cannes, France. (Photo by Dominique Charriau/WireImage)

Perfect in pinstripes. Julia Roberts was all business at the "Money Monster" photocall in a black pinstripe suit and white blouse.

(Photo by Samir Hussein/WireImage)

Blake Lively sizzled in a glittering, gold number as she made her way to the "Cafe Society premiere." The actress even showed off a hint of her baby bump with the curve-hugging number. REUTERS/Eric Gaillard

Berenice Bejo was pretty in polka dots in a dress with a white blazer and a pair of tennis shoes. (Photo by Ian Gavan/Getty Images)

Julianne Moore was a show-stopped in a sequined, glittering sheer number with a completely see-through back panel. As usual, she was every inch the A-list actress in the look. (Photo by Samir Hussein/WireImage)

Kris Jenner is clearly wearing her best knit outfit to the south of France, but we can't say we're into the look. The tight-fitting peddle-pushers and the flowing, oversized top are a definite miss.

(Photo by Andreas Rentz/Getty Images)

Naomi Watts was a midnight blue maven in this sweet strapless, A-line gown at the Opening Gala Dinner at Cannes.

(Photo by Dominique Charriau/WireImage)

White hot! Kristen Stewart was casual and cool in this pretty skirt and T-shirt combo in all-white. We love the detailing on the bottom of the skirt and her fun heels, bringing the look together.

(Photo by Samir Hussein/WireImage)

Kirsten Dunst was a ray of sunshine in this classic yellow dress! Perhaps the best part of her summery look were her incredible shoes and straw bag.

(Photo by Jacopo Raule/GC Images)

Victoria Beckham slipped into a sexy black and white jumpsuit that seemed to fit her tiny figure perfectly.

(Photo by Neil Mockford/Alex Huckle/GC Images)

Justin Timberlake stopped by the "Trolls" photo-call and his demure outfit looks completely out of place among the brightly-clad women.

CANNES, FRANCE - MAY 11: French actress Alice Taglioni attends the 'Cafe Society' premiere and the Opening Night Gala during the 69th annual Cannes Film Festival at the Palais des Festivals on May 11, 2016 in Cannes, France. (Photo by Andreas Rentz/Getty Images)

CANNES, FRANCE - MAY 11: Model Lily Donaldson attends the 'Cafe Society' premiere and the Opening Night Gala during the 69th annual Cannes Film Festival at the Palais des Festivals on May 11, 2016 in Cannes, France. (Photo by Andreas Rentz/Getty Images)

CANNES, FRANCE - MAY 11: Actress Araya A. Hargate attends the 'Cafe Society' premiere and the Opening Night Gala during the 69th annual Cannes Film Festival at the Palais des Festivals on May 11, 2016 in Cannes, France. (Photo by Dominique Charriau/WireImage)

Actress Gong Li poses on the red carpet as she arrives for the opening ceremony and the screening of the film "Cafe Society" out of competition during the 69th Cannes Film Festival in Cannes, France, May 11, 2016. REUTERS/Yves Herman

Actress Virginie Efira poses on the red carpet as she arrives for the opening ceremony and the screening of the film "Cafe Society" out of competition during the 69th Cannes Film Festival in Cannes, France, May 11, 2016. REUTERS/Regis Duvignau

CANNES, FRANCE - MAY 11: Julianne Moore arrives at the Opening Gala Dinner during The 69th Annual Cannes Film Festival on May 11, 2016 in Cannes, France. (Photo by Venturelli/WireImage)

CANNES, FRANCE - MAY 11: Gael Garcia Bernal arrives at the Opening Gala Dinner during The 69th Annual Cannes Film Festival on May 11, 2016 in Cannes, France. (Photo by Dominique Charriau/WireImage)

CANNES, FRANCE - MAY 11: Carly Steel arrives at the Opening Gala Dinner during The 69th Annual Cannes Film Festival on May 11, 2016 in Cannes, France. (Photo by Venturelli/WireImage)

CANNES, FRANCE - MAY 11: Monika Bacardi arrives at the Opening Gala Dinner during The 69th Annual Cannes Film Festival on May 11, 2016 in Cannes, France. (Photo by Gisela Schober/Getty Images)

CANNES, FRANCE - MAY 11: Bianca Vitali attend the 'Cafe Society' premiere and the Opening Night Gala during the 69th annual Cannes Film Festival at the Palais des Festivals on May 11, 2016 in Cannes, France. (Photo by Venturelli/WireImage)

CANNES, FRANCE - MAY 11: Catherine Deneuve arrives at the Opening Gala Dinner during The 69th Annual Cannes Film Festival on May 11, 2016 in Cannes, France. (Photo by Venturelli/WireImage)

CANNES, FRANCE - MAY 11: French actress Elsa Zylberstein arrives at the Opening Gala Dinner during The 69th Annual Cannes Film Festival on May 11, 2016 in Cannes, France. (Photo by Venturelli/WireImage)

CANNES, FRANCE - MAY 11: Kristen Stewart arrives at the Opening Gala Dinner during The 69th Annual Cannes Film Festival on May 11, 2016 in Cannes, France. (Photo by Venturelli/WireImage)

CANNES, FRANCE - MAY 11: Leila Bekhti attends the 'Cafe Society' premiere and the Opening Night Gala during the 69th annual Cannes Film Festival at the Palais des Festivals on May 11, 2016 in Cannes, France. (Photo by Venturelli/WireImage)

CANNES, FRANCE - MAY 11: Producer Edward Walson arrives at the Opening Gala Dinner during The 69th Annual Cannes Film Festival on May 11, 2016 in Cannes, France. (Photo by Venturelli/WireImage)

CANNES, FRANCE - MAY 11: French Actress Maud Wyler attends the 'Cafe Society' premiere and the Opening Night Gala during the 69th annual Cannes Film Festival at the Palais des Festivals on May 11, 2016 in Cannes, France. (Photo by Venturelli/WireImage)

Caitriona Balfe looked pretty and lovely in a white romper with tons of texture. (Photo by Tony Barson/FilmMagic)

Model Toni Garrn poses on the red carpet as she arrives for the screening of film "Loving" in competition at the 69th Cannes Film Festival in Cannes, France, May 16, 2016. REUTERS/Eric Gaillard

CANNES, FRANCE - MAY 16: Actress Sonam Kapoor attends the 'Loving' premiere during the 69th annual Cannes Film Festival at the Palais des Festivals on May 16, 2016 in Cannes, France. (Photo by Gisela Schober/Getty Images)

CANNES, FRANCE - MAY 16: La La Anthony attends the 'Loving' premiere during the 69th annual Cannes Film Festival at the Palais des Festivals on May 16, 2016 in Cannes, France. (Photo by Gisela Schober/Getty Images)

CANNES, FRANCE - MAY 16: Actors Ben Foster and Chris Pine attend the 'Hell Or High Water' Photocall during the 69th Annual Cannes Film Festival on May 16, 2016 in Cannes, France. (Photo by Clemens Bilan/Getty Images)

CANNES, FRANCE - MAY 16: Usher attends the 'Hands Of Stone' Photocall at the annual 69th Cannes Film Festival at Palais des Festivals on May 16, 2016 in Cannes, France. (Photo by George Pimentel/WireImage)

CANNES, FRANCE - MAY 16: Actress Ana DeArmas attends the 'Hands Of Stone' Photocall at the annual 69th Cannes Film Festival at Palais des Festivals on May 16, 2016 in Cannes, France. (Photo by George Pimentel/WireImage)

CANNES, FRANCE - MAY 16: Heidi Klum attends The Harmonist Cocktail Party during The 69th Annual Cannes Film Festival at Plage du Grand Hyatt on May 16, 2016 in Cannes. (Photo by Clemens Bilan/Getty Images for The Harmonist)

CANNES, FRANCE - MAY 22: Clemence Poesy attends the Award Ceremony at the annual 69th Cannes Film Festival at Palais des Festivals on May 22, 2016 in Cannes, France. (Photo by Luca Teuchmann/WireImage)